linux-kernel - Re: [PATCH 6/8] cpufreq: qcom-cpufreq-hw: Use auto-registration for energy model

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Date:   Tue, 10 Aug 2021 11:26:25 +0100
From:   Lukasz Luba <lukasz.luba@....com>
To:     Viresh Kumar <viresh.kumar@...aro.org>
Cc:     Rafael Wysocki <rjw@...ysocki.net>,
        Vincent Donnefort <vincent.donnefort@....com>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 6/8] cpufreq: qcom-cpufreq-hw: Use auto-registration for
 energy model



On 8/10/21 8:36 AM, Viresh Kumar wrote:
> Use the CPUFREQ_REGISTER_WITH_EM flag to allow cpufreq core to
> automatically register with the energy model.
> 
> This allows removal of boiler plate code from the driver and fixes the
> unregistration part as well.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>   drivers/cpufreq/qcom-cpufreq-hw.c | 5 ++---
>   1 file changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c
> index f86859bf76f1..221433c6dcb0 100644
> --- a/drivers/cpufreq/qcom-cpufreq-hw.c
> +++ b/drivers/cpufreq/qcom-cpufreq-hw.c
> @@ -362,8 +362,6 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy)
>   		goto error;
>   	}
>   
> -	dev_pm_opp_of_register_em(cpu_dev, policy->cpus);
> -
>   	if (policy_has_boost_freq(policy)) {
>   		ret = cpufreq_enable_boost_support();
>   		if (ret)
> @@ -406,7 +404,8 @@ static struct freq_attr *qcom_cpufreq_hw_attr[] = {
>   static struct cpufreq_driver cpufreq_qcom_hw_driver = {
>   	.flags		= CPUFREQ_NEED_INITIAL_FREQ_CHECK |
>   			  CPUFREQ_HAVE_GOVERNOR_PER_POLICY |
> -			  CPUFREQ_IS_COOLING_DEV,
> +			  CPUFREQ_IS_COOLING_DEV |
> +			  CPUFREQ_REGISTER_WITH_EM,
>   	.verify		= cpufreq_generic_frequency_table_verify,
>   	.target_index	= qcom_cpufreq_hw_target_index,
>   	.get		= qcom_cpufreq_hw_get,
> 

Reviewed-by: Lukasz Luba <lukasz.luba@....com>